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Sarkar S, Pal S, Santra S, Zyryanov GV, Majee A. Visible-Light-Triggered Synthesis of N-α-Ketoacylated Sulfoximines by Denitrogenative and Oxidative Functionalization of Vinyl Azides. J Org Chem 2024. [PMID: 38757898 DOI: 10.1021/acs.joc.4c00796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
We have introduced a sulfoximidation reaction initiated by visible light between α-phenyl vinyl azides and NH-sulfoximines. The cost-effective and readily accessible hypervalent iodine reagent (PIDA) easily promoted the oxidative sulfoximidation process to afford N-α-ketoacylated sulfoximines in good to high yields, involving the formation of two new C-O bonds and one C-N bond. Additionally, the protocol offers noteworthy advantages, including its metal-free and photocatalyst-free reaction and its broad substrate compatibility.
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Affiliation(s)
- Subhankar Sarkar
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, Bolpur 731235, India
| | - Satyajit Pal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, Bolpur 731235, India
| | - Sougata Santra
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Street, 620002 Yekaterinburg, Russian Federation
| | - Grigory V Zyryanov
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Street, 620002 Yekaterinburg, Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, 22 S. Kovalevskoy Street, 620219 Yekaterinburg, Russian Federation
| | - Adinath Majee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, Bolpur 731235, India
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2
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Westberg M, Su Y, Zou X, Huang P, Rustagi A, Garhyan J, Patel PB, Fernandez D, Wu Y, Hao C, Lo CW, Karim M, Ning L, Beck A, Saenkham-Huntsinger P, Tat V, Drelich A, Peng BH, Einav S, Tseng CTK, Blish C, Lin MZ. An orally bioavailable SARS-CoV-2 main protease inhibitor exhibits improved affinity and reduced sensitivity to mutations. Sci Transl Med 2024; 16:eadi0979. [PMID: 38478629 DOI: 10.1126/scitranslmed.adi0979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 02/21/2024] [Indexed: 05/09/2024]
Abstract
Inhibitors of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) main protease (Mpro) such as nirmatrelvir (NTV) and ensitrelvir (ETV) have proven effective in reducing the severity of COVID-19, but the presence of resistance-conferring mutations in sequenced viral genomes raises concerns about future drug resistance. Second-generation oral drugs that retain function against these mutants are thus urgently needed. We hypothesized that the covalent hepatitis C virus protease inhibitor boceprevir (BPV) could serve as the basis for orally bioavailable drugs that inhibit SARS-CoV-2 Mpro more efficiently than existing drugs. Performing structure-guided modifications of BPV, we developed a picomolar-affinity inhibitor, ML2006a4, with antiviral activity, oral pharmacokinetics, and therapeutic efficacy similar or superior to those of NTV. A crucial feature of ML2006a4 is a derivatization of the ketoamide reactive group that improves cell permeability and oral bioavailability. Last, ML2006a4 was found to be less sensitive to several mutations that cause resistance to NTV or ETV and occur in the natural SARS-CoV-2 population. Thus, anticipatory design can preemptively address potential resistance mechanisms to expand future treatment options against coronavirus variants.
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Affiliation(s)
- Michael Westberg
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - Yichi Su
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
- Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Fudan University, Shanghai 200032, China
| | - Xinzhi Zou
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Pinghan Huang
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Arjun Rustagi
- Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Jaishree Garhyan
- Stanford In Vitro Biosafety Level 3 Service Center, Stanford University, Stanford, CA 94305, USA
| | - Puja Bhavesh Patel
- Stanford In Vitro Biosafety Level 3 Service Center, Stanford University, Stanford, CA 94305, USA
| | - Daniel Fernandez
- Program in Chemistry, Engineering, and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA
- Sarafan ChEM-H, Macromolecular Structure Knowledge Center, Stanford University, Stanford, CA 94305, USA
| | - Yan Wu
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Chenzhou Hao
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
| | - Chieh-Wen Lo
- Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Marwah Karim
- Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Lin Ning
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
| | - Aimee Beck
- Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | | | - Vivian Tat
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Aleksandra Drelich
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Bi-Hung Peng
- Department of Neuroscience, Cell Biology, and Anatomy, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Shirit Einav
- Department of Medicine, Stanford University, Stanford, CA 94305, USA
- Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
| | - Chien-Te K Tseng
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Neuroscience, Cell Biology, and Anatomy, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Catherine Blish
- Department of Medicine, Stanford University, Stanford, CA 94305, USA
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
| | - Michael Z Lin
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, USA
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Jadav JP, Vankar JK, Gupta A, Gururaja GN. Atmospheric Oxygen Facilitated Oxidative Amidation to α-Ketoamides and Unusual One Carbon Degradative Amidation to N-Alkyl Amides. J Org Chem 2023; 88:15551-15561. [PMID: 37883330 DOI: 10.1021/acs.joc.3c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
A mild, transition-metal-free novel synthetic approach for the construction of C═O and C-N bonds has been demonstrated. Easily accessible gem-dibromoalkenes under similar conditions form oxidative amidation product α-ketoamides and unusual degradative amidation product N-alkyl amides by simply changing the amine substitute. Atmospheric air containing molecular oxygen proved to be an ideal oxidant for an amidation reaction. Under similar conditions, the electron-deficient gem-dibromoalkenes play a dual role with different formamides forming novel oxidative amidation products and by the state of art neighboring group participation of amine to unusual one-carbon degradative amidation products.
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Affiliation(s)
- Jaydeepbhai P Jadav
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India
| | - Jigarkumar K Vankar
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India
| | - Ankush Gupta
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India
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Bhukta S, Chatterjee R, Dandela R. Iodine-TBHP mediated efficient synthesis of α-ketoamides from vinyl azides and amines under mild conditions. Org Biomol Chem 2022; 20:3907-3912. [PMID: 35502880 DOI: 10.1039/d2ob00458e] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A convenient and practical synthetic approach for α-ketoamides has been developed under mild conditions. The facile synthesis of α-ketoamides has been accomplished using aryl vinyl azides and secondary amines at room temperature. The inexpensive and readily available iodine and TBHP easily promoted the oxidative amidation process to afford diketoamide derivatives in high yields. This method involves the synthesis of ketoamide compounds via sequential C-O and C-N bond formation. Moreover, metal-free and aerobic conditions and wide substrate scope are the notable advantages of this protocol.
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Affiliation(s)
- Swadhapriya Bhukta
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
| | - Rana Chatterjee
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
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Laconsay CJ, Rho TC, Tantillo DJ. The Role of Through-Bond Stereoelectronic Effects in the Reactivity of 3-Azabicyclo[3.3.1]nonanes. J Org Chem 2022; 87:3378-3388. [PMID: 35191711 DOI: 10.1021/acs.joc.1c02992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hyperconjugation/conjugation through-bond stereoelectronic effects were studied with density functional theory in the context of 3-azabicyclo[3.3.1]nonanes to unravel puzzling differences in reactivity between a vinylogous chloride (4) and a vinylogous ester (5). These compounds─whose structures differ only by one substituent─were found to display strikingly different reactivities in hydrochloric acid by Risch and co-workers ( J. Am. Chem. Soc., 1991, 113, 9411-9412). Computational analyses of substituent effects, noncovalent interactions, natural bond orbitals, isodesmic reactions, and hydration propensities lead to a model for which the role of remote, through-bond stereoelectronic effects is the key to explaining 4 and 5's diverging reactivity.
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Affiliation(s)
- Croix J Laconsay
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Tyler C Rho
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis, California 95616, United States
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